The JIRA hierarchy
Like most other information systems, JIRA organizes its data in a hierarchical structure. At the lowest level, we have fields, which are used to hold raw information. Then we have issues, which are like a unit of work to be performed. An issue will belong to one project, which defines the context of the issue. Finally, we have project categories, which logically group similar projects together. We will discuss each of these levels in the following sections:
Project category
Project category is a logical grouping for projects, usually of similar nature. Project category is optional. Projects do not have to belong to any category in JIRA. When a project does not belong to any category, it is considered uncategorized. The category itself does not contain any information, as we will see later in this chapter and later chapters. Project categories can be a helpful way to organize all you projects in JIRA, especially when you have many of them.
Project
In JIRA, a project is...